Apparatus and method for finding optimal zooming speed
US9503651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Jul 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optimal zooming speed determining device includes: a storage to store a zooming speed at each position of a zoom lens; a tracking implementer to calculate a position of the zoom lens changed in a unit time at a zooming speed at each position of the zoom lens; a moving time calculator to calculate a difference between a position of a focus lens corresponding to a position of the zoom lens before the position of the zoom lens is changed and a position of the focus lens corresponding to the changed position of the zoom lens, and calculate a focus moving time by dividing the difference between positions of the focus lens by a highest moving speed of the focus lens; and a zooming speed determiner to reduce the zooming speed at each position of the zoom lens, if the focus moving time is greater than the unit time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.